EDICAL ELECTRICITY'S 



THOMAS 

 STANLEY 

 CURTIS 



. 



P HE tendency in the development of X-Ray ap- 

 paratus has been largely in the direction of 

 greater power and penetration in order that the ex- 

 posure required for a radiograph of the heavier por- 

 tions of the body might be reduced to a minimum. 

 Little has been told the public of the efforts expended 

 to ma^e the Roentgen ray safe to reduce the danger 

 of the horrible burns so prevalent in the early days of 

 the art. Within the last month comes an announce- 

 ment of a new type of apparatus which, according 

 to its inventor, combines the features of power, speed 

 and safety to an astonishing degree. 



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"]% TY apparatus generates a burnless 

 iVl X-Ray." Such was the simple 

 and direct answer to his first question 

 when the author called on Charles H. 

 Stanley at his New York laboratory in 

 search of particulars relative to the 

 new electro-therapeutic apparatus that 

 the little bird had whispered was to be 

 found at a certain address. Realizing, of 

 course, that a statement fraught with 

 such tremendous importance was not to 

 be taken at its face value, the inventor 

 immediately proceeded to elucidate. 



In response to the natural inquiry as 

 to why his new ray did not exhibit the 

 burning tendencies of the familiar X- 

 Ray, Mr. Stanley instantly came back 

 with the question, "Why does the con- 

 ventional ray produce these burns?" 

 Frankly, we did not know beyond the 

 fact that the action of the X-Ray is de- 



structive to the tissues when applied in 

 dosages above a certain degree. Just 

 why it is destructive we are not at all 

 certain. Permitting his visitor to reach 

 this obvious and rather unsatisfying con- 

 clusion, and without offering any further 

 light on the subject, Mr. Stanley led the 

 way to the room in which his apparatus 

 had been installed. 



"Here," said the inventor, "is a ma- 

 chine which takes its current from the 

 central station mains at 220 volts pres- 

 sure with a frequency of 60 cycles per 

 second, and which delivers to the X-Ray 

 tube a current of enormous voltage and 

 at a frequency well into the millions." 

 The machine, if such it may be called, 

 proved to be a monster high frequency 

 coil. The lower portion which houses 

 the transformer, condenser and spark 

 gaps is some ten or twelve feet in length, 



